201212121020120 has 32 divisors (see below), whose sum is σ = 517402596909600. Its totient is φ = 68987012921088.

The previous prime is 201212121020033. The next prime is 201212121020143. The reversal of 201212121020120 is 21020121212102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359307358685 + ... + 359307359244.

It is an arithmetic number, because the mean of its divisors is an integer number (16168831153425).

Almost surely, 2^{201212121020120} is an apocalyptic number.

201212121020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201212121020120 is an abundant number, since it is smaller than the sum of its proper divisors (316190475889480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201212121020120 is a wasteful number, since it uses less digits than its factorization.

201212121020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718614717947 (or 718614717943 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201212121020120 its reverse (21020121212102), we get a palindrome (222232242232222).

The spelling of 201212121020120 in words is "two hundred one trillion, two hundred twelve billion, one hundred twenty-one million, twenty thousand, one hundred twenty".